Ink cartridge



FIG. 1 is a top front perspective view of an ink cartridge showing our new design;

FIG. 2 is a bottom front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a left side elevational view thereof.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. The dot-dashed lines denote the boundary of the claim, and form no part of the claimed design. 

The ornamental design for an ink cartridge, as shown and described. 